(The role of natural organic matter in the partitioning and transport of polynuclear aromatic hydrocarbons in groundwater)

Technical Report · Mon Jan 01 04:00:00 EST 1990

DOI:https://doi.org/10.2172/6535735· OSTI ID:6535735

A general summary of our progress associated with batch and column experiments is included in this report. During the period of July 1, 1989 through the present, we have emphasized batch experiments to study the partitioning between one PAH, phenanthrene, and each of two sources of groundwater natural organic matter (NOM) in the presence and absence of a model mineral surface (a-Al{sub 2}O{sub 3}). The behavior of a soil-derived fulvic acid sorbed to the mineral surface has also been investigated. The NOM sources were used as bulk'' (unfractionated) and fractionated into different molecular weight (MW) fractions by ultrafiltration (UF), and into humic and non-humic fractions by XAD-8 resin adsorption. Three techniques have been evaluated for differentiating between aqueous PAH and NOM-bound PAH: fluorescence quenching (FQ), reverse phase (Sep-Pak) separations, and dialysis bags. We have conducted batch experiments to study the three binary systems; PAH-NOM, PAH-a-Al{sub 2}O{sub 3}, and NOM-a-Al{sub 2}O{sub 3}; and the ternary system, PAH-NOM-a-Al{sub 2}O{sub 3}. Sorption of NOM onto a mineral surface, alumina, has been evaluated from the perspective of providing a model of soil organic matter.

• Research Organization: Colorado Univ., Boulder, CO (USA)
• Sponsoring Organization: DOE/ER
• DOE Contract Number: FG02-89ER60850
• OSTI ID: 6535735
• Report Number(s): DOE/ER/60850-1; ON: DE91000826
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201 -- Chemical & Physicochemical Properties
54 ENVIRONMENTAL SCIENCES
540320* -- Environment
Aquatic-- Chemicals Monitoring & Transport-- (1990-)
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
AROMATICS
CHALCOGENIDES
CHELATING AGENTS
CHEMICAL REACTIONS
CHEMISTRY
COLLOIDS
CONDENSED AROMATICS
DISPERSIONS
DOCUMENT TYPES
ENVIRONMENTAL TRANSPORT
FEDERAL REGION IV
FLUORESCENCE
FRACTIONATION
FULVIC ACIDS
GEOCHEMISTRY
GROUND WATER
HYDROCARBONS
HYDROGEN COMPOUNDS
LUMINESCENCE
MASS TRANSFER
MINERALS
NORTH AMERICA
NORTH CAROLINA
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC MATTER
OXIDE MINERALS
OXIDES
OXYGEN COMPOUNDS
PARTITION
PHENANTHRENE
PROGRESS REPORT
RESEARCH PROGRAMS
SEPARATION PROCESSES
SILICA
SILICON COMPOUNDS
SILICON OXIDES
SORPTION
SORPTIVE PROPERTIES
SURFACE PROPERTIES
USA
WATER